KR100317084B1 - self-clean color steel plate and its manufacturing method - Google Patents
self-clean color steel plate and its manufacturing method Download PDFInfo
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- KR100317084B1 KR100317084B1 KR1019990008073A KR19990008073A KR100317084B1 KR 100317084 B1 KR100317084 B1 KR 100317084B1 KR 1019990008073 A KR1019990008073 A KR 1019990008073A KR 19990008073 A KR19990008073 A KR 19990008073A KR 100317084 B1 KR100317084 B1 KR 100317084B1
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- chromate
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 37
- 239000010959 steel Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 33
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 239000010410 layer Substances 0.000 claims abstract description 28
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004593 Epoxy Substances 0.000 claims abstract description 13
- 229920000728 polyester Polymers 0.000 claims abstract description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001297 Zn alloy Inorganic materials 0.000 claims abstract description 12
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 12
- 239000011701 zinc Substances 0.000 claims abstract description 12
- 239000003973 paint Substances 0.000 claims abstract description 9
- 239000011247 coating layer Substances 0.000 claims abstract description 3
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920000877 Melamine resin Polymers 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 6
- 229920001225 polyester resin Polymers 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 6
- 239000003431 cross linking reagent Substances 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims 1
- 150000004756 silanes Chemical class 0.000 claims 1
- 239000010408 film Substances 0.000 abstract description 18
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 239000002253 acid Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000010409 thin film Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 5
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000008199 coating composition Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- SLLUHROOFRDQLU-UHFFFAOYSA-N 2-n-butoxy-1,3,5-triazine-2,4,6-triamine Chemical compound CCCCONC1=NC(N)=NC(N)=N1 SLLUHROOFRDQLU-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- -1 methoxy butoxy Chemical group 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- 239000013638 trimer Substances 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- BLRJSXFWDNMKQT-UHFFFAOYSA-N 2-n-methoxy-1,3,5-triazine-2,4,6-triamine Chemical compound CONC1=NC(N)=NC(N)=N1 BLRJSXFWDNMKQT-UHFFFAOYSA-N 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004455 differential thermal analysis Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- CJMZLCRLBNZJQR-UHFFFAOYSA-N ethyl 2-amino-4-(4-fluorophenyl)thiophene-3-carboxylate Chemical compound CCOC(=O)C1=C(N)SC=C1C1=CC=C(F)C=C1 CJMZLCRLBNZJQR-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 150000002527 isonitriles Chemical class 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003335 secondary amines Chemical group 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/092—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
- C23C28/025—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only with at least one zinc-based layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/754—Self-cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2363/00—Epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Laminated Bodies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
본 발명은 도금 처리한 아연 및 아연합금도금강판에 자기세정성 및 비오염성, 내식성, 내산성, 가공성을 갖는 기능성PCM도막을 부여하여, 일반 PCM도장 강판과는 완전히 다른 신기능을 갖는 도장강판에 관한 것으로, 그의 주요구성은 소지강판(1)과, 그 위에 도금 처리한 아연 및 아연합금 도금층(2)과, 상기 도금층(2) 위에 크롬산염 처리를 한 크롬산염층(3)와, 그리고 상기 크롬산염층(3) 상에 형성되며 에폭시계 프라이마(4)와 폴리에스터 상도(5)로 이루어지는 자기세정도막(10)으로 이루어진다.The present invention relates to a coated steel sheet having a new function completely different from general PCM coated steel sheets by giving a functional PCM coating film having self-cleaning properties, non-pollution resistance, corrosion resistance, acid resistance, and workability to plated zinc and zinc alloy plated steel sheets. The main composition thereof is a base steel sheet (1), a zinc and zinc alloy plated layer (2) plated thereon, a chromate layer (3) subjected to a chromate treatment on the plated layer (2), and the chromate It is formed on the layer (3) and consists of a self-cleaning film (10) consisting of an epoxy-based primer (4) and a polyester top coat (5).
그의 제조 방법은 도금 처리한 아연 및 아연합금 도금층(2)위에 롤코팅방법을 사용하여 얇은 박막으로 크로메이트 도포처리한 후 60~140℃ 온도조건에서 건조시켜 20~80㎎/㎡의 크롬산염층(3)을 형성시키는 크롬산염처리 공정과, 그리고 에폭시계 프라이마와 폴리에스터 상도로 이루어지는 자기세정 도료를 롤 코팅한 후 190~240℃로 가열, 건조시켜 프라이마 및상도 2층의 자기세정 도막층의 형성공정으로 이루어진다.Its manufacturing method is a chromate coating process using a thin thin film on the plated zinc and zinc alloy plated layer (2) using a thin film and dried at a temperature of 60 ~ 140 ℃ temperature chromate layer of 20 ~ 80mg / ㎡ ( 3) Chromate treatment process to form and roll coating a self-cleaning paint consisting of epoxy primer and polyester top, then heated to 190 ~ 240 ℃, dried self-cleaning coating layer Is made of a forming process.
Description
본 발명은 강판의 표면에 예를 들어 아연 및 아연합금류를 전기도금 또는 용융도금한 후 그 상층에 부식 방지를 위해 도포형 크롬산염 처리를 하고, 그 상층에 자기세정성 및 비오염성, 내식성, 내산성, 가공성 기능을 갖는 도막을 형성한 칼라강판 및 그의 제조방법에 관한 것이다.The present invention, for example, electroplating or hot-dip galvanizing zinc and zinc alloys on the surface of the steel sheet and then coated with chromate treatment to prevent corrosion on the upper layer, and self-cleaning and non-pollution, corrosion resistance, The present invention relates to a color steel sheet on which a coating film having an acid resistance and workability function is formed, and a manufacturing method thereof.
현재 고층 및 저층 건축물의 건축외장재로 사용되고 있는 PCM강판의 경우 이를 건축물의 외부에 설치한 후 주변의 오염인자인 먼지, SO2 가스, 산성비, 카본류의 유,무기 복합분진 등에 의하여 강판표면이 쉽게 오염되는 것을 볼 수 있다. 이러한 경우 건물의 지속적인 관리를 위하여 정기적인 외부세척을 통하여 외관유지를 하고 있으나 유지경비 측면에서 매우 부담스럽고 작업이 어려운 실정이다.In case of PCM steel sheet which is currently used as building exterior material of high and low buildings, the surface of steel sheet is easily contaminated by the surrounding pollution factors such as dust, SO2 gas, acid rain, organic oil and inorganic dust, etc. You can see it. In this case, the exterior is maintained through regular external cleaning for the continuous management of the building, but it is very burdensome and difficult in terms of maintenance cost.
근래에는 상기한 문제점을 보완하기 위해 아연도금강판위에 자기세정 기능을 일부 부여한 PCM 칼라강판 제품도 있으나, 이는 부분적인 세정만 이루어져 이로 인하여 오히려 표면에 얼룩이 지기 때문에 진정한 자기세정이 요구되는 건축외장재로사용하기에는 무리가 있고, 또한 일정시간이 지나면 본래의 자기세정 기능도 서서히 떨어지는 문제점을 지니고 있었다.In recent years, some PCM color steel products have been provided with a self-cleaning function on galvanized steel to compensate for the above problems, but this is used as a building exterior material that requires true self-cleaning because it only stains the surface due to partial cleaning. There was a problem to be difficult, and after a certain time, the original self-cleaning function also had a problem of gradually falling.
본 발명은 상기한 문제점들을 감안하여 발명한 것으로, 본 발명의 목적은 아연 및 아연합금 도금강판에 자기세정성 및 비오염성, 내식성, 내산성, 가공성을 부여한 기능성 도막을 형성하여 자기세정성이 우수한 도장 처리강판을 제조하는 것을목적으로 한다.The present invention has been invented in view of the above-mentioned problems, and an object of the present invention is to form a functional coating film provided with self-cleaning and non-pollution resistance, corrosion resistance, acid resistance, and workability on zinc and zinc alloy plated steel sheets, and having excellent self-cleaning properties. It is aimed at manufacturing processed steel sheet.
도 1은 본 발명에 따른 자기세정 칼라강판의 구성을 단면상 설명을 위하여 개략 도시한 확대단면도1 is an enlarged cross-sectional view schematically showing the cross-sectional configuration of the self-cleaning color steel sheet according to the present invention.
도 2 는 자기세정성을 시험한 결과를 보여 주는 예시 사진Figure 2 is an example photograph showing the results of the self-cleaning test
상기한 목적을 이루기 위한 본 발명의 특징은, 소지강판(1)과, 그 위에 도금처리한 아연 및 아연합금 도금층(2)과, 상기도금층(2) 위에 크롬산염 처리를 한 크롬산염층(3)와, 그리고 상기 크롬산염층(3) 상에 형성되며 에폭시계 프라이마(4)와폴리에스터 상도(5)로 이루어지는 자기세정도막(10)으로 이루어지는 것을 특징으로 한다.Features of the present invention for achieving the above object, the base plate 1, the zinc and zinc alloy plated layer (2) plated thereon, and the chromate layer (3) treated with chromate on the plated layer (2) And a self-cleaning film (10) formed on the chromate layer (3) and composed of an epoxy-based prima (4) and a polyester top coat (5).
또한 본 발명에 따른 자기세정 칼라강판의 제조 방법은, 도금 처리한 아연 및 아연합금 도금층(2)위에 롤코팅 방법을 사용하여 얇은 박막으로 크로메이트 도포 처리한 후 60~140℃ 온도조건에서 건조시켜 20~80㎎/㎡의 크롬산염층(3)을 형성시키는 크롬산염처리 공정과, 그리고 에폭시계 프라이마와 폴리에스터 상도로 이루어지는 자기세정 도료를 롤 코팅한 후190~240℃로 가열, 건조시켜 프라이마 및 상도 2층의 자기세정 도막층의 형성공정으로 이루어지는 것을 특징으로 한다.In addition, the method of manufacturing a self-cleaning color steel sheet according to the present invention, using a roll coating method on the plated zinc and zinc alloy plated layer (2) by the chromate coating treatment with a thin thin film and dried at a temperature condition of 60 ~ 140 ℃ 20 A chromate treatment process for forming a chromate layer (3) of ˜80 mg / m 2, and a roll coating of a self-cleaning paint made of epoxy primer and polyester top, followed by heating and drying at 190-240 ° C. It is characterized by consisting of a step of forming a self-cleaning coating layer of two layers of forehead and top coat.
이하, 본 발명의 다른 특징 및 효과에 대하여 재차 상세히 설명한다.Hereinafter, the other features and effects of the present invention will be described in detail again.
본 발명에 따른 자기세정 칼라강판의 제조는, 소지강판(1)에 전기도금 또는 용융 도금 처리한 아연 또는 아연합금 도금층(2), 바람직하기로는 5 - 25 ㎛ 두께의 도금층(2) 위에 크롬산염 처리를 롤코팅 방식으로 표면에 얇은 막을 도포하여,60~140℃ 온도조건에서 건조시켜 20~80mg/㎡의 크롬산염층(3)을 형성시키고, 그 위에 자기세정도막(10)을 구성하는 에폭시계 프라이마(4) 및 폴리에스터 상도(5)를 형성시킨다. 이 에폭시계 프라이마(4)는 건조도막두께( D.F.T ) 4 - 7 ㎛, 바람직하기로는 5㎛ 로 형성시키고, 폴리에스터 상도(5)는 바람직하기로는 15~22㎛가 되도록 롤 코딩한 후, 드라이오븐에서 롤코딩한 강판을 PMT(peak metal temperature) 190~240℃로 가열하여 건조시킨다.Production of the self-cleaning color steel sheet according to the present invention is performed by electroplating or hot-dip galvanizing the zinc or zinc alloy plating layer 2, preferably chromate on the plating layer 2 having a thickness of 5 to 25 μm. The coating is applied to the surface by a roll coating method, and dried at a temperature of 60 to 140 ° C. to form a chromate layer 3 of 20 to 80 mg / m 2, and the epoxy constituting the self-cleaning film 10 thereon. The system prima 4 and the polyester top coat 5 are formed. The epoxy-based primer 4 is formed to have a dry coating thickness (DFT) of 4 to 7 μm, preferably 5 μm, and the polyester top coat 5 is roll-coated to preferably 15 to 22 μm, Steel sheets roll-coated in a dry oven are dried by heating to 190-240 ° C. PMT (peak metal temperature).
이때 도금강판 상에 도포하는 자기세정 PCM 도료는, 우수한 가공성을 유지하여 주는 폴리에스터수지와 멜라민 수지를 기본으로 함과 아울러 도막 형성시 도막 표면에 자기세정성의 특성을 부여하여 비오염성을 향상시키도록 하였다. 즉, 적용수지에 특수한 가교 방식을 도입함으로써, 도막 표면에 치밀한 조성을 부여하여 외부환경의 오염물질이 도막내부로 침투되어지는 것을 근본적으로 차단시켜 내식성 및 대기중의 산성비에 대한 내산성을 향상시키도록 하였다. 다시말해, 주변의 오염인자에 대한 비오염성 및 자기세정성, 내식성, 가공성을 동시에 만족시키도록 하였다.At this time, the self-cleaning PCM coating applied on the plated steel sheet is based on polyester resin and melamine resin which maintains excellent processability, and improves the non-pollution property by imparting the self-cleaning property to the surface of the coating film when forming the coating film. It was. In other words, by introducing a special cross-linking method to the applied resin, it gives a dense composition to the surface of the coating to fundamentally block the infiltration of pollutants from the external environment into the coating to improve the corrosion resistance and acid resistance to acid rain in the atmosphere. . In other words, non-pollution, self-cleaning, corrosion resistance, and processability of surrounding pollutants were simultaneously satisfied.
이와 관련된 상기 도료 포뮬러(FORMULA)의 일반적인 설정은 다음과 같다.In this regard, the general setting of the paint formula is as follows.
먼저, 도 1 에서 폴리에스터 상도(5)를 이루는 상도 바인더는. 도료의 조성물중 기본수지로 사용되는 폴리에스터 수지로써, 하이드록시기(Hydroxy Group)을 갖는 오일변성 폴리에스테르의 변형수지이며, 오일프리폴리에스터 수지와 통상의 무황 변형 폴리이소시아네이트 화합물과의 반응에 의하여 제조될 수 있다.First, the topological binder forming the polyester top coat 5 in FIG. A polyester resin used as a base resin in a coating composition, which is a modified resin of an oil-modified polyester having a hydroxy group (Hydroxy Group), by reaction of an oil-free polyester resin with a conventional sulfur-free polyisocyanate compound Can be prepared.
이소시아네이드 화합물은 보통 헥사메틸렌 디이소시아네이트(Hexamethylene Diisocyanate), 이소포론 디이소시아네이트(isophorone Diisocyanate), 자일렌 디이소시아네이트(Xylene Diisocyanate), 2,4,6 -트리이소시아네이트톨루엔(triisocyanatetoluene) 등 또는 이와 유사한 것을 사용할 수 있다.Isocyanide compounds are usually hexamethylene diisocyanate, isophorone diisocyanate, xylene diisocyanate, 2,4,6-triisocyanatetoluene, or the like. Can be used.
주수지인 폴리에스터 수지의 수평균 분자량은 1,000에서 8,000이고, 유리전이온도(Tg)는 섭씨 -5도 에서 45도 이고, OH값은 20 에서 150 인 경우에 도막의 유연성, 도막 경도, 내용제성, 내오염성 등에서 최적의 물성을 얻을 수 있다. 이때이들 수치의 평가는 유리전이온도(Tg) 의 경우는 시차열분석법(Differential Thermal Analysis;DTA), 수평균 분자량은 겔투과 크로마토그래피(Gel Permeation Chromatography;GPC)를 사용하여 측정하였다.The polyester resin, the main resin, has a number-average molecular weight of 1,000 to 8,000, a glass transition temperature (Tg) of -5 to 45 degrees Celsius, and an OH value of 20 to 150. Optimum physical properties can be obtained from pollution resistance. At this time, the evaluation of these values was measured by differential thermal analysis (TTA) in the case of glass transition temperature (Tg), and the number average molecular weight was measured by gel permeation chromatography (GPC).
이때 가교수지로 사용되는 멜라민은 가능한 분자량이 300에서 1000사이인 메톡시형 또는 메톡시 부톡시 혼합형 멜라민이바람직하다. 만약 부톡시 멜라민 단독이나, 메톡시 멜라민과 부톡시 멜라민을 각각 혼합 사용할 때에는 폴리에스터수지와의 상용성이 급격히 떨어져, 멜라민이 도료의 상층부로 전이되게 되고, 이러한 현상은 도막의 비오염성은 향상되나. 도막의 광택저하 및 작업성 불량을 야기 시킬 수 있게 된다.The melamine used as the crosslinking resin is preferably a methoxy or methoxy butoxy mixed melamine having a molecular weight of 300 to 1000. If butoxy melamine alone or methoxy melamine and butoxy melamine are mixed, the compatibility with polyester resin is drastically reduced, and the melamine is transferred to the upper part of the paint, which improves the non-pollution of the coating film. . It may cause gloss deterioration and poor workability of the coating film.
주수지인 폴리에스터와 가교수지인 멜라민과의 가교를 촉진시켜 도막의 치밀도를 올려주는데 사용되는 경화촉진제로는 열에 의하여 해리될 수 있는 물질인 아민으로 마스킹된 P-톨루엔 설폰산(toluene Sulfonic Acid), 디노닐나프탈렌 설폰산(Dinonylnaphthalene Sulfonic Acid) 등을 사용하는데, 이러한 아민들은 통상적으로 1차, 2차, 3차 아민 등이 있으며 이중 2차 아민이 바람직하다.P-toluene sulfonic acid (P-toluene sulfonic acid masked with amine, which is a substance that can be dissociated by heat) is used as a curing accelerator to promote the crosslinking between polyester, a main resin, and melamine, a crosslinking resin. ), Dinonylnaphthalene sulfonic acid, and the like, and such amines are usually primary, secondary, tertiary amines, etc., of which secondary secondary amines are preferred.
그 이유로는 보통 1차 아민(Primary amine)의 경우에는 도막에 황변 등 색상의 변화를 가져오고, 3차 아민의 경우엔 표면에 수축을 발생시킨다. 이외에도 에폭시 마스킹 설폰산(Epoxy Masking Sulfonic Acid)이나, 유기수지 마스킹 설폰산을 사용할 수 있다. 사용량에 있어서 부족할 경우엔 도막의 경화가 작업조건에 따라 불충분하게 일어나고, 과량 사용할 시에는도막의 경화가 너무 급격히 일어나서, 도장작업시 도막에 포핑(Popping)이 발생하거나. 도막에 수축을 발생시킨다.For this reason, primary amines usually cause a change in color such as yellowing in the coating film, and in the case of tertiary amines, shrinkage occurs on the surface. In addition, epoxy masking sulfonic acid or organic resin masking sulfonic acid may be used. When the amount is insufficient, curing of the coating film is insufficient depending on the working conditions, and when excessively used, curing of the coating film occurs too rapidly, causing popping of the coating film during the painting operation. Shrinkage occurs in the coating.
도료 조성물 중 도막의 표면에 친수 특성 및 내후성을 부여하는 표면개질제로 실란올 화합물을 사용하며, 사용량이 부족할 경우엔 도막의 자기 세정 효과가 현저히 저하되고, 과량 사용할 시엔 도료의 원재료비의 상승 및 저장 중에 대기 중의 수분과의 반응으로 도료 안정성의 저하가 발생될 수 있다.In the coating composition, silanol compound is used as a surface modifier to impart hydrophilicity and weather resistance to the surface of the coating film.When the amount is insufficient, the self-cleaning effect of the coating film is significantly lowered.In case of excessive use, the raw material cost of the paint is increased and stored. Reaction with moisture in the atmosphere may cause a decrease in paint stability.
도료 조성물 중 보조 가교 역활을 하는 보조가교제로는 열경화형에 적합한 무황변 이소시아네이트인 이소프로필렌 디이소시아네이트(IPDI),토릴렌 디이소시아네이트(TDI), 헥사메틸렌 디이소시아네이트(HMDI),3량체 헥사메틸렌 디이소시아네이트(Trimer HMDI) 등이 사용되는데, 보조가교제의 사용량이 부족할 경우에는 도막의 내산성 향상 효과가 떨어진다. 또한 보조가교제의 경화촉진제로 사용되어지는 촉매로는 주석(Tin)계 킬레이트화합물이 바람직하다.Auxiliary crosslinking agents which act as an auxiliary crosslinking agent in the coating composition include isopropylene diisocyanate (IPDI), tolylene diisocyanate (TDI), hexamethylene diisocyanate (HMDI), and trimer hexamethylene diisocyanate which are non-yellowing isocyanates suitable for thermosetting. (Trimer HMDI) is used, but when the amount of auxiliary crosslinking agent is insufficient, the effect of improving the acid resistance of the coating film is reduced. In addition, a tin chelate compound is preferable as a catalyst used as a curing accelerator of the auxiliary crosslinking agent.
다음은 도면에서 에폭시계 프라이마(4)를 구성하는 하도의 선정에 대하여 상세히 설명한다.Next, the selection of the roadway constituting the epoxy-based prima 4 in the drawings will be described in detail.
소재 밀착을 위해 사용되는 하도로는 에폭시계의 프라이머, 폴리에스터계 프라이머, 아크릴계 프라이머 또는 이를 변성한계의 하도를 사용할 수 있는데, 본 발명에 따른 바람직한 실시예로써 에폭시계의 프라이마를 사용한 것으로 하였다. 이때 하도에 부여된 물성은, 하도 자체의 기본물성인 일반적인 내식성, 상도와 도금강판과의 부착성 강화등 외에 연실율을 부여하여 소재와 상도 사이 계면에서 충분한 완충작용을 하여 가공시 발생되는 소재의 균열이 상도층까지 발전되지 않고 하도층에서 흡수되도록 구성하였다. 안료는 상,하도에 관계없이 PCM용 도료에 사용되는 유기, 무기안료를 제한없이 사용할수 있다.As the lower road used for material adhesion, an epoxy primer, a polyester primer, an acrylic primer, or a denaturation limit thereof may be used. An epoxy primer may be used as a preferred embodiment of the present invention. At this time, the physical properties imparted to the undercoat, in addition to general corrosion resistance, which is the basic property of the undercoat itself, and strengthening the adhesion between the top and the plated steel sheets, give a firing rate to provide sufficient buffering action at the interface between the material and the top coat. The cracks were configured to be absorbed in the lower layer without developing to the upper layer. Pigments can be used without limitation organic and inorganic pigments used in PCM paint regardless of top and bottom.
상기한 특성의 도료를 이용한 본 발명에 따른 도장강판은 종래 제품에서는 찾아 볼 수 없는 자기세정성 등의 특성을 갖는다.The coated steel sheet according to the present invention using the paint having the above characteristics has properties such as self-cleaning properties not found in conventional products.
상기한 본 발명에 따른 자기세정 아연 및 아연합금도금 칼라강판의 자기세정성 시험결과 일반PCM강판과 비교하여 볼때종래보다 월등히 뛰어난 것으로 판명되었다. 이에 대한 실험 자료를 다음에 제시한다.As a result of the self-cleaning test of the self-cleaning zinc and zinc alloy plated color steel sheet according to the present invention, it was found to be superior to the conventional PCM steel sheet. Experimental data on this is presented below.
1. 시험조건1. Test condition
1) 시편 규격 및 조건1) Specimen Specification and Condition
-W(넓이) 300 ×L(길이) 600 ×T(두께) O.5 ㎜ 아연도강판-W (width) 300 × L (length) 600 × T (thickness) 0.5 mm galvanized steel sheet
-건조도막두께 : 하도 5 - 6 ㎛, 상도 16 - 17 ㎛Dry coat thickness: 5-6 µm for coating, 16-17 µm for coating
-표면광택 60°: 무광 (25 ~ 30%)Surface gloss 60 °: Matt (25-30%)
2) 작업조건2) Working condition
-라인속도 : 자기세정강판 50/100 mpm 2가지, 비교강판 100 mpm 1가지-Line speed: 2 self-cleaning steel sheets 50/100 mpm, 1 comparative steel sheet 100 mpm
-PMT : 자기세정강판 232℃(50mpm), 224℃(100mpm), 비교강판 230℃-PMT: Self-cleaning steel sheet 232 ℃ (50mpm), 224 ℃ (100mpm), Comparative steel sheet 230 ℃
2. 도막 물성시험방법 및 결과상기한 1 의 자기세정성 시험방법은, 옥외에 30일간 방치한 다음, 스프레이 건으로 2시간 연속 스프레이한 후 (50㎖/mim) 도막표면의 세정상태를 육안으로 관찰하였다. 그 결과는 도 2 의 사진에서 보듯이, 본 발명에 따른 자기세정 도금 칼라 강판은 얼룩이 전혀 발생하지 않고 원판 그대로 깨끗함을 유지하고 있었다.2. Coating Property Test Method and Result In the self-cleaning test method described above 1, after leaving for 30 days in the outdoors, after spraying continuously for 2 hours with a spray gun (50ml / mim), the cleaning state of the coating film surface was visually observed. As a result, as shown in the photograph of Fig. 2, the self-cleaning plated color steel sheet according to the present invention maintained the original appearance without any stain.
상기한 2 의 내오염성 시험 방법은, 유성매직(국내의 모나미 제품) 흑, 적색을 사용하여 각 폭10mm를 그은 후, 에칠알콜로 세정한 다음 색차(△E)를 측정하였다.In the above-described pollution resistance test method of 2, each width 10mm was drawn using oily magic (the domestic Monami product) black and red, and after wash | cleaning with ethyl alcohol, the color difference ((DELTA) E) was measured.
상기한 3 의 가공성 시험은, T-굽힘 후 균열상태 한계치를 측정한 수치임.The workability test of 3 described above is a value obtained by measuring the crack state limit after T-bending.
상기한 4 의 부착성 시험은, 2mm 크로스 캇트하여 측정함.The adhesion test of the above 4 is measured by 2 mm cross cutting.
상기한 5 의 내약품성 시험은, 시험전 시편의 색상과 5% NaOH 용액에 24 시간 침지한 시편의 색상 차이임.The chemical resistance test of 5 is the color difference between the color of the test specimen and the test specimen soaked in 5% NaOH solution for 24 hours before the test.
상기한 6 의 표면경도 시험은 일본의 미쓰비시사 제품인 '유니펜슬'을 사용하여 긁기 시험을 한 결과이다. 결과는 본 발명에 따른 자기세정 도금칼라강판이 H+로 나와 표면 경도가 양호한 것으로 나타났다.The surface hardness test of the above 6 is a result of a scratch test using a "Uni Pencil" manufactured by Mitsubishi Corporation of Japan. The results show that the self-cleaning plated color steel sheet according to the present invention is shown as H + and the surface hardness is good.
상술한 시험들에 의한 비교 결과에 의하면, 본 발명에 따른 자기세정 아연 및 아연합금도금 칼라강판은, 종래의 비교되는 일반변성칼라강판 및 실리콘 변성칼라강판보다 자기세정성 및 내오염성 등의 면에서 모두 우수한 성질의 것으로 나타남을 확인할 수 있었다.According to the comparison results by the above tests, the self-cleaning zinc and zinc alloy plated color steel sheet according to the present invention, in terms of self-cleaning and fouling resistance than conventional modified modified color steel sheet and silicon modified color steel sheet It was confirmed that all appeared to be of excellent properties.
또한 상기와 같은 본 발명에 따른 강판에 의하면 내식성도 뛰어날 뿐만 아니라, 강판의 표면에 낙서 등을 하여도 쉽게 지워지는 장점이 있다.In addition, according to the steel sheet according to the present invention as described above is excellent in corrosion resistance, there is an advantage that can be easily erased even by graffiti on the surface of the steel sheet.
상기한 본 발명에 따른 설명은 비록 아연 도금강판을 특정하여 적용하는 것으로 한정하여 설명하였지만 이에 한정되는 것이 아니라 그와 유사한 다른 어떠한 강판류의 것에 적용하여도 본 발명의 기술 범위에 속하는 것으로 해석되어야 할 것이다.Although the description according to the present invention described above is limited to the specific application of galvanized steel sheet, the present invention is not limited thereto and should be construed as belonging to the technical scope of the present invention even if applied to any other similar steel sheet. will be.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990008073A KR100317084B1 (en) | 1999-03-11 | 1999-03-11 | self-clean color steel plate and its manufacturing method |
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| KR1019990008073A KR100317084B1 (en) | 1999-03-11 | 1999-03-11 | self-clean color steel plate and its manufacturing method |
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| KR20000060046A KR20000060046A (en) | 2000-10-16 |
| KR100317084B1 true KR100317084B1 (en) | 2001-12-22 |
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| KR100349085B1 (en) * | 2000-10-18 | 2002-08-14 | 연합철강공업 주식회사 | Coated steel plate |
| KR100966862B1 (en) * | 2007-12-14 | 2010-06-29 | 포스코강판 주식회사 | Coated steel plate for metal pcb capable of radiating heat and manufacturing method thereof |
| US8617665B2 (en) | 2009-08-03 | 2013-12-31 | Alcoa, Inc. | Self-cleaning substrates and methods for making the same |
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